[Faculty] Fwd: [CSRC-SDSU COLLOQUIUM]: Confinement, Aging and Rejuvenation Effects in Polymer Films/Composites

[Jose Castillo]

*DATE*:  Friday, March 25th, 2016

*TITLE*:   Confinement, Aging and Rejuvenation Effects in Polymer
Films/Composites

*TIME*:  3:30 PM

*LOCATION*:  GMCS 214

*SPEAKER*:  Dr. Alexey V. Lyulin. Theory of Polymers and Soft Matter
Group, Eindhoven
University of Technology (Technische Universiteit Eindhoven).

*ABSTRACT*:  In this presentation I will show our recent results on
molecular-dynamic (MD) simulations of thin polymer films. I will discuss
the confinement effects for atactic polystyrene, natural rubber and generic
bead-rod random copolymer model. I will concentrate mainly on two
questions: - the influence of the confinement on the glass-transition
temperature; - the influence of the mechanical deformation on the polymer
segmental mobility and peculiarities of the glass transition and Payne
effect.

The significant drop of the storage modulus under uniaxial deformation
(Payne effect) restrains the performance of the elastomer-based composites
and the development of possible new applications. I will present and
discuss our LAMMPS and Gromacs MD simulations to study the mechanical
properties of this family of nanocomposite materials. Our goal is to
provide simulational insights into the viscoelastic properties of filled
elastomers, and try to connect the macroscopic mechanics with composite
microstructure, the strength of the polymer-filler interactions and the
polymer mobility at different scales.

*HOST*:  Dr. Arlette Baljon

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Jose E. Castillo  Ph.D.

Director / Professor

Computational Science Research Center

5500 Campanile Dr

San Diego State University

San Diego CA 92182-1245

619 5947205/3430, Fax 619-594-2459

 http://www.csrc.sdsu.edu/mimetic-book/
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